std::error_code::operator bool – cppreference.com
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Prüft, ob der Fehler Wert gültig ist, dh nicht-Null .
Original:
Checks if the error value is valid, i.e. non-zero.
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Parameter
(None)
Original:
(none)
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Rückgabewert
false wenn value() == 0, true sonst .
Original:
false if value() == 0, true otherwise.
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